Matlab JavaMethod Reference to a cleared variable

Hi, I am newbie for Mat-lab , now i want to from mat-lab pass values to java method . Below My Java Code :

public static void sampleTest(int width ,int height ,List<Integer> points){
Sample recordedSample = new Sample ();
recordedSample.setHeight(height);
recordedSample.setWidth(width);  
recordedSample.getMatrix().add(points);
}
Below My Mat-lab Code :
%From My 10 frames Video file read

width =vidobj.width;
height =vidobj.height;
for int i=1:10
matrix{1,i}=[3,2,,4,2,4,3,2,4];%Dynamic values 1-by-8 matrix 
end
clear java;
      import edu.lipreading.*;
      training = TrainingPanel;
      javaMethod('recordSample',training,int32(width),int32(height),matrix{1,i});

Result :When I have run my Mat-lab code i got Error like : Reference to a cleared variable width.

Error in imqacdemo03>pb_liveread_Callback (line 445) javaMethod('recordSample',training,int32(width),int32(height),matrix{1,i});